Portal.ModemHelp.Net has been retired.
The portal itself is mostly unused and not very helpful in today's environment. When it first went live it was quite useful, but things have changed quite a bit over the years.
Please accept my kindest thanks for the support everyone has given over the last...holy cow...21 years!! ModemHelp.Net is offically old enough to drink alcohol in the US!
Some of the other subdomains may also be sunsetting, but the core support data for ModemHelp.Net isn't going anywhere.